Determination of dipole and quadrupole polarizabilities of Ba{sup +} by measurement of the fine structure of high-L n=9 and 10 Rydberg states of barium
Journal Article
·
· Physical Review. A
- Department of Physics, Colorado State University, Fort Collins, Colorado 80523 (United States)
The fine structure of high-angular-momentum n=9 and 10 Rydberg states of barium has been measured precisely, using the resonant excitation Stark ionization spectroscopy method. Optical transitions corresponding to (n,n{sup '})=(10,30) (9,17), and (9,20) were induced with a Doppler-tuned CO{sub 2} laser, determining the fine-structure energies corresponding to all n=9 and 10 levels with L{>=}6. The pattern of these fine-structure energies conforms closely with an effective potential model, by comparison with which the dipole and quadrupole polarizabilities of Ba{sup +} can be determined. Combining our data with earlier measurements made it possible to deduce, in addition, the portion of {alpha}{sub 2} due to the lowest excited D state of Ba{sup +}. Our best estimates of these three properties are {alpha}{sub 1}=124.30(16)a{sub 0}{sup 3}, {alpha}{sub 2}=2462(361)a{sub 0}{sup 5}, and {alpha}{sub 2}{sup 0}=1828(88)a{sub 0}{sup 5}.
- OSTI ID:
- 20650077
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 71; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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